Normal Operation

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The occupant classification sensor (OCS) system is used to classify the front passenger seat occupant in the event of a deployable impact. Refer to Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) .

The occupant classification system module (OCSM) monitors the weight sensors and circuitry for faults. If the OCSM detects an obstruction on one or all OCS weight sensors, it will store DTC B229B in memory and send a message to the restraints control module (RCM) which sends a message to the instrument cluster (IC) module to illuminates the air bag indicator.

DTC B229B Occupant Classification System Obstruction - If the OCSM detects a negative force on one or all OCS weight sensors, it will set this DTC.

This pinpoint test is intended to diagnose the following:

A foreign object placed under or contacting the passenger seat
OCS system component(s)